update celery commands in docker-compose.yml
update celery commands in docker-compose.yml

samuelclay/NewsBlur,samuelclay/NewsBlur,samuelclay/NewsBlur,samuelclay/NewsBlur,samuelclay/NewsBlur,samuelclay/NewsBlur,samuelclay/NewsBlur,samuelclay/NewsBlur,samuelclay/NewsBlur,samuelclay/NewsBlur,samuelclay/NewsBlur